[Skin adnexal tumors: Histological study about 96 cases]

Clinicopathological Study of Skin Adnexal Tumors: A Single Institute Experience

Background: Skin adnexal tumors (SATs) encompass a very broad variety of rare dermatopathologic entities. Objective: The aim of the present study was to analyze an incidence and clinicopathological findings of patients with biopsy-proven ASTs.

Material and Methods: A retrospective review of all consecutive cutaneous tumors that were diagnosed at the Martin Biopsy Center in Martin from July 2019 to March 2021 was carried out. ASTs have been searched for from this file and studied based on their histologic type and line of differentiation, anatomic distribution, age, and gender.

Results: Among over 3,700 skin tumors a total of 38 ASTs in 38 individuals (21 males, 17 females) have been found. The age of the patients ranged from 22-89 years (mean 55.5 y.). The head and neck region was found to be the most common site affected (26/38; 68.4%), followed by extremities (8/38; 21.1%) and trunk (4/38; 10.5%). Tumors of hair follicle origin constituted the largest category (22/38; 57.9%), followed by sweat gland tumors (15/38; 39.5%) and tumors derived from sebaceous glands (1/38; 2.6%). Benign lesions accounted for all 38 cases. Trichoepithelioma was the most frequent lesion found in the category of follicular tumors and poroma was the most common among tumours with sweat gland differentiation.

Conclusion: An overall incidence of ASTs is low and in this institutional study they constituted about 1% of all cutaneous neoplasms. ASTs display a marked phenotypic heterogeneity, that is why many published studies have provided divergent results concerning their clinicopathological features.

[Epidemiological and anatomoclinical features of scalp tumors in black Africans]

Introduction

Au Sénégal, les études portant sur les tumeurs du cuir chevelu sont quasi inexistantes. Notre objectif était de déterminer le profil épidémiologique et anatomo-clinique des tumeurs du cuir chevelu en dermatologie.

Méthodes

Il s'agit d'une étude prospective, descriptive et analytique, réalisée sur une période de 16 mois (01 mars 2014 au 30 juin 2015), effectuée aux deux services de dermatologie de Dakar. La confirmation diagnostique était histopathologique.

Résultats

Nous avions colligé 36 patients dont 14 cas de tumeurs malignes et 22 cas de tumeurs bénignes. Le sex ratio était de 1:1, et l'âge moyen de 51 ans pour les premières et 39 ans pour les dernières. La fréquence hospitalière était de 0,18%. Le délai moyen de consultation était de 14 mois pour les tumeurs malignes et 52 mois pour les formes bénignes. Dans 11 cas de tumeurs malignes, le traitement traditionnel était le premier recours. Les tumeurs malignes étaient: carcinome épidermoïde (n=8), carcinome basocellulaire (n=3), lymphome, hidradénocarcinome et dermatofibrosarcome de Darier Ferrand (un cas chacun). Les tumeurs bénignes étaient: botriomycome (n=5), kyste trichilemmal, hamartome sébacé, cylindrome et lipome (2 cas chacun), et chéloide, syringocystadénome papillifère, schwannome, neurofibrome et nævus (un cas chacun). La malignité de la tumeur était associée à l'aspect ulcéro-bourgeonnant (p=0.003), au diamètre >4cm (p=0.05), à la douleur (p=0.009) et au saignement (p=0.006).

Conclusion

Les tumeurs du cuir chevelu, sur peau noire, sont dominées par les formes bénignes. Le carcinome épidermoïde est la tumeur maligne prédominante.

Histopathological Analysis of Skin Adnexal Tumors: A Three Year Study of 110 Cases at A Tertiary Care Center

Background:

Skin adnexal tumors (SAT) encompass wide spectrum of benign and malignant tumors that differentiate toward one or more adnexal structures found in normal skin. Overall incidence of SATs is low yet they can be challenging to diagnose.

Aims:

The aim of this study is to study the spectrum and microscopic features of SATs.

Materials and Methods:

It was a retrospective cross-sectional, descriptive study conducted over a period of 3 years. Formalin fixed, paraffin-embedded sections were stained with hematoxylin and eosin for histopathological analysis.

Results:

Out of the total 34,400 biopsies, 110 cases were diagnosed as SATs comprising 39.09% of tumors with follicular differentiation followed by tumors showing sweat gland differentiation (37.27%), and sebaceous differentiation (23.63%). The age ranged from 5 years to 85 years and male:female ratio was 1.03:1. Most of the tumors were benign (82.73%) while only 17.27% were malignant. Pilomatricoma (28.2%) was the most common benign tumor while sebaceous carcinoma (11.8%) was the most common malignant tumor.

Conclusion:

Architectural features are of great importance in differentiating benign tumors from malignant.